Hi Flávio.
Is your question how to center the calendar on the current day, instead of Wednesday of this week?
This component is an implementation of RESCalendar that is an implementation of MomentJS. Any of them refer how to do that and, from my look on the code, you have to edit the momentwithlocales.js file. It is not that easy.
Quoting MomentJS website "We now generally consider Moment to be a legacy project in maintenance mode. It is not dead, but it is indeed done. "
So my advice would be for you to look for a different component.